Bartle Bogle Hegarty has been appointed by Europe's largest bank, UBS, to launch an internet banking service.
The agency won the business following a four way pitch against BMP DDB, D'Arcy and Leo Burnett.
The online investment bank will offer a range of services including unit trusts and share dealing.
The appointment does not affect Publicis, which handles UBS's £25 million global advertising business and its £10 million below-the-line account.